<template>
  <div class="my-counter">
    <!-- 给按钮绑定点击事件，然后再事件处理函数中实现数量的加减 -->
    <button @click="changeCount('-')" type="button" class="btn btn-light">
      -
    </button>
    <!-- 禁用输入框 -->
    <input
      disabled
      v-model="obj.goods_count"
      type="number"
      class="form-control inp"
    />
    <button @click="changeCount('+')" type="button" class="btn btn-light">
      +
    </button>
  </div>
</template>

<script>
export default {
  props: {
    obj: {
      required: true,
      type: Object,
    },
  },
  methods: {
    changeCount(type) {
      if (type === "-") {
        this.obj.goods_count =
          this.obj.goods_count > 1 ? this.obj.goods_count - 1 : 1;
      } else {
        this.obj.goods_count++;
      }
    },
  },
};
</script>

<style lang="less" scoped>
.my-counter {
  display: flex;
  .inp {
    width: 45px;
    text-align: center;
    margin: 0 10px;
  }
  .btn,
  .inp {
    transform: scale(0.9);
  }
}
</style>